Starting and Running Problem...

You will need a feeler gauge set and some typical hand tools for adjusting the rockers.

Have someone turn the engine over while you watch the rockers. An inexpensive switch can be purchased that will allow you to connect the switch to the starter relay. With the key off you can use the switch to rotate the engine yourself while watching the rockers. This method is much easier than the helper method.

Starting with the #1 (forward) cylinder, when the intake just starts to open....have your helper stop....and adjust the intake to .010". When the exhaust just closes...have your helper stop....and adjust the exhaust to .020".
Repeat for all six cylinders and your done.